16.6.1.8: Sard
- Page ID
- 4113
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Agate | |
---|---|
Chemical composition | SiO2 Silicon dioxide |
Crystal system | Trigonal |
Habit | Aggregate |
Fracture | Conchoidal |
Hardness | 6.5-7 |
Refractive index | ± 1.54 |
Specific gravity | 2.60 |
Lustre | Vitreous |